Topic 15: Autonomic Nervous System. Questions and answers. Rated A.

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Topic 15: Autonomic Nervous System. Questions and answers. Rated A. Question 1 Correct 1.75 points out of 1.75 Flag question Question text Atropine causes the pupil of the eye to dilate b... y blocking the effect of muscarinic receptors. This means atropine is a(n) Select one: a. ganglionic blocking agent. b. beta-adrenergic blocking agent. c. alpha-adrenergic blocking agent. d. parasympathetic blocking agent. e. parasympathomimetic agents. Question 2 Correct 1.75 points out of 1.75 Flag question Question text Which of the following is NOT a parasympathetic effect? Select one: a. constriction of the pupils of the eye b. contraction of the urinary bladder c. decreased heart rate d. dilation of the bronchioles in the lungs e. increased gastric secretions Question 3 Correct 1.75 points out of 1.75 Flag question Question text Which of the organs listed below is not directly innervated by the autonomic nervous system? Select one: a. the heart b. sweat gland c. smooth muscle d. skeletal muscle e. salivary gland Question 4 Correct 1.75 points out of 1.75 Flag question Question text If acetylcholine binds to muscarinic receptors, Select one: a. Na+ channels open. b. Ca2+ channels open. c. adrenaline is released. d. G proteins mediate the cell's response. e. the response is neither excitatory nor inhibitory. Question 5 Correct 1.75 points out of 1.75 Flag question Question text The parasympathetic nervous system is characterized by Select one: a. the absence of preganglionic fibers. b. the absence of postganglionic axons. c. short postganglionic axons near the organs they innervate. d. short preganglionic axons near the spinal cord. e. long postganglionic axons. Question 6 Correct 1.75 points out of 1.75 Flag question Question text Match the characteristic with the correct nervous system. All axons are myelinated Select one: a. somatic motor nervous system b. autonomic nervous system c. both somatic and autonomic nervous systems d. neither somatic nor autonomic nervous system Question 7 Correct 1.75 points out of 1.75 Flag question Question text What part of the CNS integrates thoughts and emotions to produce ANS responses? Select one: a. cerebrum b. cerebellum c. midbrain d. hypothalamus Question 8 Correct 1.75 points out of 1.75 Flag question Question text Sympathetic stimulation of the postganglionic cells of the adrenal medulla causes the release of Select one: a. acetylcholine and epinephrine. b. norepinephrine and acetylcholine. c. epinephrine and norepinephrine. d. cortisol. e. aldosterone. Question 9 Correct 1.75 points out of 1.75 Flag question Question text The figure illustrates the parasympathetic division. What does "B" represent? Select one: a. preganglionic neurons b. pelvic splanchnic nerves c. cranial nerves d. postganglionic neurons e. terminal ganglia Question 10 Correct 1.75 points out of 1.75 Flag question Question text Autonomic reflexes Select one: a. are impossible. b. are integrated somewhere in the CNS. c. have efferent input and afferent output. d. are an example of positive feedback. e. are harmful. Question 11 Correct 1.75 points out of 1.75 Flag question Question text Axons exit the sympathetic chain ganglia by all of the following except Select one: a. spinal nerves. b. cranial nerves. c. splanchnic nerves. d. sympathetic nerves. e. nerves that innervate the adrenal medulla. Question 12 Incorrect 0.00 points out of 1.75 Flag question Question text Identify structure "D" on the above diagram. Select one: a. autonomic ganglion b. somatic motor neuron c. effector organ (smooth muscle of GI tract) d. postganglionic neuron e. preganglionic neuron Question 13 Correct 1.75 points out of 1.75 Flag question [Show More]

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